Miscellaneous

Acknowledgments

We
thank Professor Loren Williams of Georgia Tech for many helpful
discussions and Professor W. David Wilson and Dr. Daoyuan Ding of
Georgia State University for preparation of the PNA(AQ)/DNA hybrid
computer model. Densitometry was performed in the Wilson lab with the
assistance of Katherine Hopkins. This work was supported by funding
from the National Institutes of Health and the National Science
Foundation, for which we are grateful.